IT Infrastructure Components and Three-layers Hierarchal Model for CSU Organization

This article discusses the IT infrastructure components and three-layers hierarchal model for CSU organization. It also includes a cloud-based design proposal, network simulation, and recommendations for creating a secure and scalable network. The proposed network design is based on three-layered hierarchical network models and uses Cisco IT infrastructure to provide high scalability, reliability, availability, and security for an organization. The article also covers DHCP, DNS, and web services, backup and file sharing between staffs, and IP addressing. Additionally, it identifies two cloud services for an organization and provides steps for configuring DHCP, web server, and DNS services.

IT Infrastructure

Contents
1.Introduction..........................................................................................................................................2
2.IT Infrastructure Components...............................................................................................................2
3.Three-layers hierarchal model..............................................................................................................4
4.Cloud based design proposal................................................................................................................6
5.Network simulation..............................................................................................................................7
6.Recommendations and Conclusions...................................................................................................16
References.............................................................................................................................................16

1.Introduction
Main scope of this project is to creates and implement the organization networks. The
CSU organization is IT based organization. It uses the information technology to provide the
effective marketing and customer satisfaction through the best services compared to other
organization. The CSU organization implement the business operations by using the Information
technology. It has website to improve the organization customer satisfaction and marketing. The
organization domain name is www.csu.org.au. It has email services for each and every staff
member. It has one or more campus at various locations. This organization uses the wireless
network connection within the organization campus. The CSU organization has more than 2000
personal computers at each campus. It also has the file share and backup servers for shares the
file between the staff and regularly backup the staff important documents. In this project, the It
department wants to analyze the current network design and implement the network design by
using the cisco packet tracer network simulator. The proposed network design is used to hosting
some network services by using cloud and virtualization. The Proposed network design should in
three layers hierarchal model.
2.IT Infrastructure Components
The IT infrastructure components is defined in ITIL v3. It is set of hardware, networks,
facilities, software and more. It is used to develop, monitor, control, deliver and test the IT
services. The IT infrastructure components are listed in below (Tanenbaum and Wetherall,
2014).
 Switching
 Routing
 Servers
 Personal computers

Here, we are using the cisco switches, routers, servers and dell personal computers.
Cisco SG300-28 28-Port Gigabit Managed Switch
This switch is used to provide the high availability and performance. It supports the vital
business applications while reducing the down time on the network. It has the control network
traffic that associated with special features like IPv6 support, layer 3 static routing and quality of
services. It also has the mass deployment capabilities. It optimizes the power usages for energy
efficiency.
Cisco 1000 Series Integrated Services Routers
The integrated services routers are used to provide the reliability, security and high
performance. It easily gets the internet access and gives the advanced security. This router is
easily fixing the high performance that are easily deploy and manage the network connection. It
also provides the highly secure metro ethernet, wireless LAN connectivity and broadband. It
offers the next generation connection, integrated security and software defined WAN. It has the
increased mobility to provides the next generation LAN and WAN options. This router is ideal
for use as customer premised equipment. It enables the high availability for network services
(Scaling networks, 2014).

Cisco UCS C220 M3 Rack Server
Basically, Cisco servers are providing the high performance. It delivers the unified
computing to reduce the TCO and increases the network agility. It basically identifies the
varying the network work load challenges through balance of internal storage resources, memory
and I/O. It has the memory intensive, two rack unit rack and socket server to provide the high
availability and reliability of the network. It extends the Cisco united computing system
capabilities by using the multi core processors and it embedded quad port Gigabit ethernet
control. It has the IP based recording unit that is used to record the video conference.
3.Three-layers hierarchal model
The cisco three layered hierarchical model is used to simplifies the task of building a
scalable, reliable and less expensive hierarchical network of an organization because it focusses
on packet construction. It also focusses on three functional areas such as core layer, distribution
layer and access layer (SearchNetworking, 2018). The Core layer is considered as network
backbone and it has high speed cables and high-end switches. Here, no packet manipulation is
done by devices in this layer. It ensures the reliable delivery of packets. The distribution layer is
including the LAN based router and 3-layer switches and it ensures the packers are properly
routed in an organization. The access layer is focuses on connecting the client to the network.
This layer is used to ensures that packets are delivers to the end user computers (Comer, 2015).
Current IT Infrastructure

The Current IT infrastructure does not provide the reliable and scalable network for an
organization because it does not use high performance network components and it does not use
the reliable backup and file server. It does not host the someone network devices and it does not
use the virtualization cloud to secure the organization information. So, the IT department decided
to creates the secure and scalable network for an organization. The Current IT infrastructure
requires the high-performance network devices, virtualization and cloud services to implement
the organization processes. Geographical diagram of the network is shown below (Cisco.com,
2018).
The proposed network services have the possibility of scaling the network. The proposed
organization network is used to provide the high scalability of the network. It provides the high
performance and high-speed network access compared to current IT infrastructure. It has more
possibility of scaling the organization network because it uses the high performance and
availability of the IT infrastructure components. It provides the high security.

Servers and Services Identification
Identified servers and services are listed in below.
 DHCP services
 Web services
 DNS services
 File server
 Backup server
Proposed Network design
The Proposed network design is shown below (Peterson and Davie, 2012).

The proposed IT infrastructure for CSU organization is shown above. This network
diagram is based on three layered hierarchical network models. Because it is used to simplifies
the task of building a scalable, reliable and less expensive hierarchical network of an
organization because it focusses on packet construction. The proposed network design uses the
IT infrastructure components to develop, monitor, control, deliver and test the IT services for an
organization. It uses the cisco IT infrastructure to provide the high scalability, reliability,
availability and security for an organization (Tech-faq.com, 2018).
IP Addressing
The proposed network IP addressing and Subnet mask is listed in below.
Devices IP address Subnet mask
PC-1 192.168.1.10 255.255.255.0
PC-2 192.168.1.10 255.255.255.0
PC-3 192.168.1.10 255.255.255.0
PC-4 192.168.1.10 255.255.255.0
PC-5 192.168.1.10 255.255.255.0
PC-6 192.168.1.10 255.255.255.0
Router – 1 192.168.1.1 255.255.255.0
Router – 2 192.168.2.1 255.255.255.0
Server 192.168.1.14 255.255.255.0

4.Cloud based design proposal
The cloud is one of the best investments for a small and medium size business can make
because it is perfect file sharing tool especially for multimedia and document files are too large
to send by mail. It provides the reliable data backup solution, easy way to share files with
colleagues and client and instant access to files. It provides the best cloud storage services for an
organization. Identified two cloud services for an organization is shown below.
1. IDrive - IDrive is used to offers the storage plan for individual and business. IT boasts the
extensive file sharing and syncing the capabilities. It has the ability to share the file and
folders through email, mobile access, remote management tools and more. It also backup
the multiple devices and multiple files in real time.
2. Acronis - The Acronis is used to offers the data protection, syncing, sharing and secure
file access solitons as well as system management tool for any organization. It protects
the everything in one simple step. It works with both public and private hosts of user
network.
The proposed IT infrastructure provides the DHCP, DNS and web services for an
organization. It also performs the Backup and file sharing between staffs.
Dynamic applications scaling using virtualization and Cloud to provide the effective
organization and it involves to,
1. Maintaining the sufficient resources
2. Meet peak requirement can be costly.
3. Provide powerful computing model that allows users to access the resources on-demand.
4. Easily deployed the web application on web server installed in virtual machine instances.
5. Dynamically allocate the resources to users.
6. Delivering the IT resources on-demands to users.
7. Also maintaining the utilization of higher resources
8. Reducing the management and infrastructure costs.

5.Network simulation
Device Configuration
PC configuration
In PC1,
To configure the IP for the PC by using below steps.
Click the PC and select the Desktop
After click the IP configuration.
Then enter the IP address as 192.168.1.10
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It is shown below.

In PC0,
Enter the IP address as 192.168.1.11
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It is shown below.

In PC2,
Enter the IP address as 192.168.1.12
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It is shown below.

In PC5,
Enter the IP address as 192.168.2.10
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It’s shown bellow

In PC4,
Enter the IP address as 192.168.2.11
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It is shown below.

In PC0,
Enter the IP address as 192.168.2.12
Subnet mask as 255.255.255.0
Default Gateway as 192.168.1.1
It is shown below.

Switch Configuration
To configure the switch by typing the below command.
Here creating the vlan network to interconnecting the both routers.
It is shown below.
In Switch 0,

In switch 1,

Router configuration
In Router 0,
Enter the interface as fa0/0
ip address as 192.168.1.1
subnet mask as 255.255.255.0
It is shown below.

In Router 0,
Enter the interface as se2/0
ip address as 192.168.1.1
subnet mask as 255.255.255.0
It is shown below.

In Router 1,
Enter the interface as se2/0
ip address as 192.168.3.1
subnet mask as 255.255.255.0
Enter the interface as fa1/0
ip address as 192.168.4.1
subnet mask as 255.255.255.0

Enter the interface as fa0/0
ip address as 192.168.2.1
subnet mask as 255.255.255.0
It is shown below.

IP routing configuration
IP routing process is done by using the Routers. It is shown below.
In router 0,
ip route 192.168.2.0 255.255.255.0 192.168.1.0

In router 1,
ip route 192.168.1.0 255.255.255.0 192.168.2.0

DHCP Services configuration
To configure the DHCP services by follows the below steps.
In Router 1,
Enter the below command to configure the DHCP connection.
ip dhcp pool IPD
network 192.168.1.0 255.255.255.0
default-router 192168.1.1
ip dhcp excluded-address 192.168.1.1 192.168.1.5
ip dhcp excluded-address 192.168.1.6 192.168.1.9

exit

To check the DHCP connection by using the below steps.
Click the PC.
Select the Desktop and click the IP configuration
After click the DHCP
It automatically provides the IP address.
It is shown below.

In Router 2,

Enter the below command to configure the DHCP connection.
ip dhcp pool IPD
network 192.168.2.0 255.255.255.0
default-router 192168.2.1
ip dhcp excluded-address 192.168.2.1 192.168.2.5
ip dhcp excluded-address 192.168.2.6 192.168.2.9
exit

Here also check the DHCP connection by using the below steps.
Click the PC.
Select the Desktop and click the IP configuration
After click the DHCP
It automatically provides the IP address.
It is shown below.

Web Server Configuration
To configure the web browser services in the network by using the below steps.
Click the server and select the web browser.
After enter the IP address.
It is shown below.

DNS Service Configuration
To configure the DNS server by using the following steps.
Click the server and select the Services.
After click the DNS.
In DNS services window, Click the on button.
Enter the name as csu.edu.au
And address as 30.0.0.1
Finally save the record. It is shown below.

After enter the DNS server name for each Client and server PC. It is shown below.

Here configures the DNS server for Each interface and allow the inside and outside NAT
address. It is shown below.
For Router 0,

For Router 0,

Finally check the DNS services. It is shown below.

Ping configuration
The client pings the own gateway and it is shown below.

Client Pings the server and it is shown below.

6.Recommendations and Conclusions
The CSU organization is successfully created the secure and reliable IT infrastructure.
The Proposed network infrastructure is also used to provide the availability and stability of the
network access for an organization. It analyzed the current network design and implemented the
network design by using the cisco packet tracer network simulator. The proposed network design
is used to hosting some network services by using cloud and virtualization services. The
Proposed network design is based on three layered hierarchical models because it simplifies the
task of building a scalable, reliable and less expensive hierarchical network of an organization. It
uses the cloud and virtualization services to backup and files sharing in the organization. The
proposed cloud and virtualization services are using the IDrive and Acronis. These two cloud
services are used to provide the secure and high-performance backup and file sharing
performance. In future, CSU organization uses the most popular cloud and virtualization services
to improve the backup and file sharing services.
References
A, J. (2014). Packet Tracer Network Simulator. Packt Publishing.
C. Chieu, T. (2018). Dynamic Scaling of Web Applications in a Virtualized Cloud Computing
Environment. [online] www.researchgate.net. Available at:
https://www.researchgate.net/publication/224085069_Dynamic_Scaling_of_Web_Applications_in
_a_Virtualized_Cloud_Computing_Environment [Accessed 17 Nov. 2010].
Cisco.com. (2018). Cisco Global Learning Network. [online] Available at:
https://www.cisco.com/web/learning/netacad/demos/CCNP1v30/ch1/1_1_1/index.html
[Accessed 2 Apr. 2018].
Comer, D. (2015). Computer Networks and Internets. Pearson Education Limited.
Peterson, L. and Davie, B. (2012). Computer networks. Amsterdam: Elsevier/Morgan
Kaufmann.
Scaling networks. (2014). Indianapolis, IN: Cisco Press.
SearchNetworking. (2018). The Cisco three-layered hierarchical model. [online] Available at:
http://searchnetworking.techtarget.com/tutorial/The-Cisco-three-layered-hierarchical-model
[Accessed 2 Apr. 2018].
Tanenbaum, A. and Wetherall, D. (2014). Computer networks. Harlow, Essex: Pearson
Education.

Tech-faq.com. (2018). Understanding the Cisco Three-Layer Hierarchical Model. [online]
Available at: http://www.tech-faq.com/understanding-the-cisco-three-layer-hierarchical-
model.html [Accessed 2 Apr. 2018].